WO2020211137A1 - 一种适用于锚泊定位阴极保护浮体的r6级高强韧性海洋系泊链钢及其系泊链 - Google Patents
一种适用于锚泊定位阴极保护浮体的r6级高强韧性海洋系泊链钢及其系泊链 Download PDFInfo
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Abstract
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Claims (14)
- 一种适用于锚泊定位阴极保护浮体的R6级高强韧性海洋系泊链钢,其特征在于:化学成分按重量百分比wt%计为C 0.18~0.24,N 0.006~0.024,P 0.005~0.025,S≤0.005,Si 0.15~0.35,Mn 0.20~0.40,Cr 1.40~2.60,Ni 0.80~3.20,Mo 0.35~0.75,Cu≤0.50,Al≤0.02,Ti≤0.005,V 0.04~0.12,Nb 0.02~0.05,Ca 0.0005~0.004,O≤0.0015,H≤0.00015,余量为Fe和不可避免的杂质元素;进一步限定0.22≤(C+N)≤0.26;合金总量∑M=(Si+Mn+Cr+Ni+Mo+Cu),3.4≤∑M≤6.8;微合金总量∑MM=(Ti+Al+Nb+V),0.065≤∑MM≤0.194。
- 根据权利要求1所述的适用于锚泊定位阴极保护浮体的R6级高强韧性海洋系泊链钢,其特征在于:化学成分中N的重量百分比wt%计为0.016~0.024。
- 一种适用于锚泊定位阴极保护浮体的R6级高强韧性海洋系泊链,其特征在于:化学成分按重量百分比wt%计为C 0.18~0.24,N 0.006~0.024,P 0.005~0.025,S≤0.005,Si 0.15~0.35,Mn 0.20~0.40,Cr 1.40~2.60,Ni 0.80~3.20,Mo 0.35~0.75,Cu≤0.50,Al≤0.02,Ti≤0.005,V 0.04~0.12,Nb 0.02~0.05,Ca 0.0005~0.004,O≤0.0015,H≤0.00015,余量为Fe和不可避免的杂质元素;进一步限定0.22≤(C+N)≤0.26;合金总量∑M=(Si+Mn+Cr+Ni+Mo+Cu),3.4≤∑M≤6.8;微合金总量∑MM=(Ti+Al+Nb+V),0.065≤∑MM≤0.194。
- 根据权利要求3所述的适用于锚泊定位阴极保护浮体的R6级高强韧性海洋系泊链,其特征在于:化学成分中N的重量百分比wt%计为0.016~0.024。
- 根据权利要求3所述的适用于锚泊定位阴极保护浮体的R6级高强韧性海洋系泊链,其特征在于:由于合金元素M的组合和限量,系泊链奥氏体化后的冷却过程中析出上贝氏体(BU),少量下贝氏体(BL)和马氏体(M)组成的复合贝氏体,组织中不包括粒状贝氏体、铁素体,距离链环表面三分之一半径处,BL+M的体积分数不超过10%,原奥氏体晶粒度在7.5~9.0级。
- 根据权利要求3所述的适用于锚泊定位阴极保护浮体的R6级高强韧性海洋系泊链,其特征在于:由于微合金元素MM的组合和限量以及C+N的限量,链组织中包含析出的平均尺度2纳米的极细MCN型碳氮化物,MCN是VMoCN,由于主要成分是V,也写作VCN。
- 根据权利要求6所述的适用于锚泊定位阴极保护浮体的R6级高强韧性海洋系泊链,其特征在于:由于微合金元素MM的组合和限量以及C+N的限量,按照化学当量比 Ti:N=3.4,Al:N=2:1,Nb:N=6.6,V:N=3.6计算,MCN型碳氮化物中,N含量显著提高,其中形成VN的V含量占总V的≤0.5。
- 根据权利要求3所述的适用于锚泊定位阴极保护浮体的R6级高强韧性海洋系泊链,其特征在于:取链的片状试样浸入按ASTM D1141配置的人工海水中,经过25℃室温80小时浸泡,链的的实验室稳定腐蚀电位约为-610~-650mV(SCE)。
- 根据权利要求8所述的适用于锚泊定位阴极保护浮体的R6级高强韧性海洋系泊链,其特征在于:按船级社标准在人工海水中分别不加电位,加电位-850、-1200mV(SCE),和进行圆柱平滑试样的应变速率≤10 -5/s的SSRT慢拉伸试验,以Z 0和Z E分别表示不加电位,加电位-850mV、-1200mV(SCE)的断面收缩率,外加电位-850、-1200mV(SCE),Z E/Z 0分别为1和≤0.18,即无脆化和严重脆化。
- 根据权利要求8所述的适用于锚泊定位阴极保护浮体的R6级高强韧性海洋系泊链,其特征在于:按船级社标准在人工海水中分别不加电位,加电位-950、-1050mV(SCE),进行拉伸速度≤6×10 -9m/s的紧凑拉伸试验,以KQEAC 0和KQEAC E分别表示不加电位,加电位的紧凑拉伸试验结果,带有预裂纹的CT试样经过48小时预充氢,外加-1050mV电位试验结果KQEAC E和KQEAC 0符合平面应变条件,满足KIC判据,比值KIEAC E/KIEAC 0=0.85,外加-950mV电位的试验结果焊缝的KQEAC E/KQEAC 0=0.88,高于链环基体的0.85;以KQEAC E/KQEAC 0≥0.80评价,EAC抗力的降低在可控范围内,而且链环的K1,KQ数值高。
- 根据权利要求3所述的适用于锚泊定位阴极保护浮体的R6级高强韧性海洋系泊链,其特征在于:该链是以符合该链化学成分的圆钢制备而成,圆钢经制链—闪光焊接—热处理得到最终产品,其中,热处理步骤包括高温淬火和回火,高温淬火温度≥980℃,水淬,水温低于50℃;回火温度600~690℃,水温低于50℃。
- 根据权利要求10所述的适用于锚泊定位阴极保护浮体的R6级高强韧性海洋系泊链,其特征在于:所述圆钢是由符合化学成分的连铸坯或钢锭经加热—开坯、轧制—缓冷制成,其中加热温度>1230℃,碳化物和碳氮化物全部溶入奥氏体;降温过程中,由于微合金元素的组合、限量以及C+N的限量,氮化物、碳氮化物的析出顺序为TiN-AlN-NbCN-VCN。
- 根据权利要求1所述的适用于锚泊定位阴极保护浮体的R6级高强韧性海洋系泊链钢也适用于高强韧结构钢长材和扁平材的生产。
- 根据权利要求1所述的适用于锚泊定位阴极保护浮体的R6级高强韧性海洋系泊链钢也适用于高强韧和要求海洋环境性能劣化抗力的结构钢长材和扁平材的生产。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP19925101.8A EP3812479B1 (en) | 2019-04-16 | 2019-05-16 | R6 high toughness offshore mooring chain steel applicable to anchor moored positioning cathodic protection floating body and mooring chain thereof |
BR112021008711-7A BR112021008711B1 (pt) | 2019-04-16 | 2019-05-16 | Tipo de aço para cadeia de amarração marítima de alta resistência e tenacidade de nível r6 destinado a ancorar e posicionar corpos flutuantes de proteção catódica, bem como sua cadeia de amarração |
RU2021101368A RU2763365C1 (ru) | 2019-04-16 | 2019-05-16 | Сталь для морской швартовной цепи высокой прочности и гибкости класса r6, предназначенной для постановки на якорь плавучего тела с катодной защитой, и швартовная цепь из нее |
US17/258,174 US20210285069A1 (en) | 2019-04-16 | 2019-05-16 | A steel for grade r6 offshore mooring chain with high strength and high toughness and its chain use in anchoring and mooring floating bodies with cathodic protection |
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CN201910306407.X | 2019-04-16 | ||
CN201910306407.XA CN110144516B (zh) | 2019-04-16 | 2019-04-16 | 一种适用于锚泊定位阴极保护浮体的r6级高强韧性海洋系泊链钢及其系泊链 |
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WO2022112607A1 (en) * | 2020-11-30 | 2022-06-02 | Dalmine S.P.A. | Steel composition, wrought article and manufacturing method of a seamless pressure vessel for compressed gas |
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CN111172473A (zh) * | 2020-02-24 | 2020-05-19 | 江苏利淮钢铁有限公司 | 一种d型锚链末端卸扣用钢 |
CN114369759A (zh) * | 2021-12-20 | 2022-04-19 | 江苏亚星锚链股份有限公司 | 一种耐低温锚链 |
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KR101654684B1 (ko) * | 2015-12-11 | 2016-09-06 | 주식회사 세아베스틸 | 저온 충격인성이 우수한 고강도 무어링 체인강 및 그 제조방법 |
CN105624566A (zh) * | 2016-01-05 | 2016-06-01 | 江阴兴澄特种钢铁有限公司 | 高强度、低热处理敏感性的r5级系泊链钢及其制造方法 |
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- 2019-05-16 US US17/258,174 patent/US20210285069A1/en active Pending
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- 2019-05-16 RU RU2021101368A patent/RU2763365C1/ru active
- 2019-05-16 EP EP19925101.8A patent/EP3812479B1/en active Active
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Cited By (1)
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WO2022112607A1 (en) * | 2020-11-30 | 2022-06-02 | Dalmine S.P.A. | Steel composition, wrought article and manufacturing method of a seamless pressure vessel for compressed gas |
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Publication number | Publication date |
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CN110144516B (zh) | 2020-12-01 |
CN110144516A (zh) | 2019-08-20 |
EP3812479B1 (en) | 2021-11-17 |
BR112021008711A2 (zh) | 2021-11-16 |
RU2763365C1 (ru) | 2021-12-28 |
US20210285069A1 (en) | 2021-09-16 |
BR112021008711B1 (pt) | 2022-11-29 |
EP3812479A4 (en) | 2021-07-07 |
EP3812479A1 (en) | 2021-04-28 |
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